Mobile phone back cover assembly line

Abstract

The application discloses a mobile phone rear cover assembling line, which comprises a feeding unit, a protective film attaching unit, a first conveying mechanism, a clamp circulating conveying mechanism, a dispensing unit, a second conveying mechanism, a pressure maintaining unit, a third conveying mechanism and a cover removing unit; the feeding unit transports the rear cover to the protective film attaching unit for film attaching; the rear cover after film attaching is transported to the output end of the first conveying mechanism; the lower die on the clamp circulating conveying mechanism is transferred to the dispensing unit through the second mechanical arm, and then the sealing ring is put into the lower die for dispensing; then the first mechanical arm is started, and the rear cover and the upper die are sequentially placed into the lower die, then the first mechanical arm transfers the die-closed clamp to the second conveying mechanism, and the die-closed clamp is transferred to the pressure maintaining unit through the second conveying mechanism for pressure maintaining; after pressure maintaining, the die-closed upper die and lower die are moved to the cover removing unit through the third conveying mechanism for cover removing, and the automatic sealing ring attaching operation of the rear cover is completed.

Description

Technical Field

[0001] This invention relates to the field of mobile phone back cover assembly technology, and more specifically to a mobile phone back cover assembly line. Background Technology

[0002] Plastic back covers are a common precision structural component in smartphones. To prevent damage during transportation, a protective film is applied to the outer surface of the back cover. To enhance the airtightness between the back cover and the phone's frame, a sealing ring is attached to the inner edge of the back cover. The conventional production method for attaching the sealing ring to the inner edge of the back cover involves first applying adhesive using a dispensing machine, then manually attaching the sealing ring to the inner edge of the back cover, and finally applying pressure. This method suffers from low precision in sealing ring attachment. Summary of the Invention

[0003] The purpose of this invention is to design a mobile phone back cover assembly line to solve the problems mentioned in the background art.

[0004] A mobile phone back cover assembly line includes a feeding unit, a protective film bonding unit, a first transmission mechanism, a fixture circulating conveying mechanism, a dispensing unit, a second transmission mechanism, a pressure holding unit, a third transmission mechanism, and a cover removal unit. The output end of the feeding unit is connected to the protective film bonding unit. The protective film bonding unit is connected to the dispensing unit via the first transmission mechanism. The dispensing unit is connected to the pressure holding unit via the second transmission mechanism. The pressure holding unit is connected to the cover removal unit via the third transmission mechanism. The cover removal unit is equipped with a unloading unit. The end of the dispensing unit, the output end of the first transmission mechanism, the input end of the second transmission mechanism, and the output end of the fixture circulating conveying mechanism are all located below a first robotic arm. The conveying unit... The inlet is located at the disassembly unit; the mobile phone back cover assembly line also includes an upper mold and a lower mold. The upper mold and the lower mold are recycled through the transfer of the fixture circulation conveying mechanism. A sealing ring and a back cover can be placed on the lower mold in sequence. The second robot can transfer the lower mold located on the fixture circulation conveying mechanism to the dispensing unit. The first robot can sequentially transfer the back cover located on the first transmission mechanism and the upper mold located on the fixture circulation conveying mechanism to the lower mold located on the dispensing unit. The first robot can simultaneously transfer the lower mold and the upper mold located on the dispensing unit after mold closing to the second transmission mechanism. The pressure holding unit can transfer the upper mold and the lower mold after mold closing to the third transmission mechanism.

[0005] Furthermore, the protective film laminating unit includes a six-station rotary disk. At least five material-carrying protrusions, capable of adsorbing the back cover, are evenly distributed circumferentially on the top of the six-station rotary disk. The protective film laminating unit includes a feeding station, a plasma treatment station, a film laminating station, a rolling station, and a discharging station circumferentially distributed above and around the six-station rotary disk. Any one of the material-carrying protrusions can sequentially pass through the feeding station, the plasma treatment station, the film laminating station, the rolling station, and the discharging station under the drive of the six-station rotary disk. The material loading station includes a loading robot connecting the material-carrying boss and the material loading unit; the plasma treatment station includes a back cover plasma treatment unit and a plasma treatment robot connecting the material-carrying boss and the back cover plasma treatment unit; the film application station includes a film application robot and a film output machine, the film application robot connecting the material-carrying boss and the film output machine; the rolling station includes a rolling unit capable of rolling the back cover; and the material discharge station includes a material discharge robot connecting the material-carrying boss and the first transmission mechanism.

[0006] Furthermore, the back cover plasma treatment unit includes a plasma treatment base for placing the back cover and a plasma treatment gun that can move around the edge of the plasma base, with the bottom of the plasma treatment gun connected to a horizontal moving mechanism.

[0007] Furthermore, the six-station rotary disk has a suction chamber in the middle, and at least five of the material-carrying protrusions are respectively connected to the top of the suction chamber through a first suction pipe. The material-carrying protrusions are provided with suction holes for adsorbing the back cover. The lower part of the six-station rotary disk is fixed to a rotating disk by a fixing rod. The lower part of the rotating disk is rotatably connected to a support base. The rotating disk is provided with a through hole. The suction chamber passes through the through hole, and one end of the suction chamber passing through the through hole is connected to a second suction pipe through a rotary joint. The end of the second suction pipe away from the suction chamber is connected to a vacuum generator.

[0008] Furthermore, a rotary motor is fixedly connected to the top of the support base, a first synchronous pulley is fixedly connected to the output end of the rotary motor, and a second synchronous pulley is fixed to the outer periphery of the rotating disk. The first synchronous pulley and the second synchronous pulley are connected by a synchronous belt.

[0009] Furthermore, the protective film bonding unit also includes a limiting cylinder installed on the top of the fixed frame. The output end of the limiting cylinder is fixedly connected to a limiting plate, which can abut against the bottom of the six-station rotary table located below the film bonding station and the rolling station.

[0010] Furthermore, a rubber block is provided between the limiting plate and the six-position rotary disk, and the rubber block is fixed to the limiting plate.

[0011] Furthermore, the end effector of the film-applying robot includes a moving shaft connected to the XYZ moving mechanism, a first moving plate fixed to the bottom of the moving shaft, a first cylinder fixed to the bottom of the first moving plate, a U-shaped plate fixed to the telescopic rod of the first cylinder, a second moving plate fixed to both sides of the U-shaped plate via a T-shaped plate, and a film-suction plate installed at the bottom of the second moving plate. The T-shaped plate is rotatably connected to the U-shaped plate. An angle motor that can drive the T-shaped plate to rotate at a certain angle is fixed to the inner side of the U-shaped plate, and a first roller shaft that can roll the back cover is also fixed to the bottom of the U-shaped plate.

[0012] Furthermore, a first sleeve is fixedly connected to the bottom of the first movable plate, and a first guide rod is fixedly connected to the top of the U-shaped plate, with the first guide rod and the first sleeve having a clearance fit.

[0013] Furthermore, the rolling unit includes a Z-axis moving mechanism, a support frame fixedly connected to the moving block of the Z-axis moving mechanism, a second cylinder mounted on the top of the support frame, a first pneumatic finger mounted on the telescopic rod of the second cylinder, a first rolling plate fixedly connected to the output end of the first pneumatic finger, a second roller shaft mounted on the lower end of the first rolling plate and capable of rolling the back cover, a third moving plate fixedly connected to the bottom of the support frame, a third cylinder mounted on the bottom of the third moving plate, a second pneumatic finger mounted on the telescopic rod of the third cylinder, a second rolling plate fixedly connected to the output end of the second pneumatic finger, and a third roller shaft mounted on the lower end of the second rolling plate and capable of rolling the back cover, wherein the second roller shaft and the third roller shaft are perpendicular to each other.

[0014] Furthermore, a second sleeve is fixedly connected to the inner top of the support frame, and a second guide rod is fixedly connected to the top of the first pneumatic finger, with the second guide rod and the second sleeve having a clearance fit.

[0015] Furthermore, a third sleeve is fixedly connected to the top of the first movable plate, and a third guide rod is fixedly connected to the top of the second pneumatic finger, with the third guide rod and the third sleeve having a clearance fit.

[0016] Furthermore, the dispensing unit includes a first worktable and a first moving mechanism for placing the lower mold. The first moving mechanism is slidably connected to the top of the first worktable. A first support frame, a second support frame, and a third support frame span across both sides of the first worktable. A sealing ring plasma treatment unit and a dispensing machine are provided on both sides of the first support frame. A sealing ring initial positioner is installed on the second support frame, and a dispensing quality detector is provided on the third support frame. The dispensing machine, the sealing ring initial positioner, and the dispensing quality detector are all connected to their respective support frames via high-precision robotic arms. A cover plate circulation conveying mechanism is also fixed to the top of the first worktable. The dispensing unit also includes a feeding robotic arm for sequentially placing the sealing ring and the cover plate on the first moving mechanism. The cover plate located on the lower mold can be transferred to the cover plate circulation conveying mechanism by the transfer robotic arm.

[0017] Furthermore, the first moving mechanism includes a first slide rail mounted on the first worktable, a second slide rail mounted on a drive column, a moving plate that can be driven by the drive column, and a support frame for placing the lower mold. The support frame is mounted on the top of the moving plate, and the moving plate is connected to the first slide rail and the second slide rail respectively via a first slider.

[0018] Furthermore, the first moving mechanism is provided in two parts. A lifting mechanism capable of lifting the lower mold is installed on the first worktable near the dispensing quality detector. The lifting mechanism includes a lifting cylinder mounted on the first worktable via a fixed plate, a Z-shaped lifting plate fixed to the telescopic rod of the lifting cylinder, pneumatic fingers mounted on the lower plate of the Z-shaped lifting plate, and a clamping rod fixed to the gripper of the pneumatic fingers and capable of clamping the lower mold.

[0019] Furthermore, a third slide rail is fixedly connected to the upper plate of the Z-shaped lifting plate, and the clamping rod is connected to the second slide rail via a second slider.

[0020] Furthermore, the pressure holding unit includes a pressure holding frame and a transport robot. The pressure holding frame is provided with several pressure holding cavities, and the transport robot can transfer the upper mold and the lower mold after mold closing on the second transmission mechanism to the pressure holding cavities.

[0021] Furthermore, the cap removal unit includes a second moving mechanism, and the unloading unit is located between the second moving mechanism and the clamp circulating conveying mechanism. The output end of the clamp circulating conveying mechanism and the third transmission mechanism and the input end of the second moving mechanism are connected by a third robot arm, and the input end of the clamp circulating conveying mechanism, the input end of the unloading unit and the output end of the second moving mechanism are connected by a fourth robot arm.

[0022] Furthermore, the second moving mechanism includes a slide rail mounted on the second workbench and capable of driving the moving frame to move, and a top plate for placing the lower mold and the upper mold after mold closing. The top plate is fixed to the top of the moving frame, and two clamping cylinders are fixed to the bottom of the top plate. Clamping plates for clamping the lower mold are fixed to the telescopic rods of the clamping cylinders.

[0023] Furthermore, it also includes a QR code spraying unit and multiple QR code scanning units. The QR code spraying unit is located between the protective film bonding unit and the feeding unit, one QR code scanning unit is located between the QR code spraying unit and the feeding unit, and one QR code scanning unit is installed on the unloading unit.

[0024] Furthermore, the clamping circulating conveying mechanism includes a bracket, a first slot at the top of the bracket, a second slot below the first slot, a first conveyor belt on both sides of the first slot, a carrier placed on the first conveyor belt, an upper mold and a lower mold that can be placed on the carrier, a second conveyor belt at the bottom of the bracket for transporting the carrier, and transfer components at both ends of the bracket for transferring the carriers on the first and second conveyor belts to each other.

[0025] Furthermore, the transfer assembly includes a vertical moving mechanism, a moving frame connected to the vertical moving mechanism, and a third conveyor belt mounted on the moving frame and alignable with the first or second conveyor belt.

[0026] Furthermore, a limiting block is fixed to the top of the movable frame.

[0027] Furthermore, a lifting cylinder for lifting the carrier is provided on the second slot located below the first robotic arm and the second robotic arm, and a lifting plate that can abut against the carrier is fixed to the telescopic rod of the lifting cylinder.

[0028] Furthermore, the bottom of the lifting plate is provided with a guide post, and the second slot is provided with a guide hole. The guide post and the guide hole are in clearance fit, and the guide post passes through the guide hole.

[0029] Furthermore, two positioning frames are installed on the top of the bracket near the lifting cylinder, and the carrier can be located between the two positioning frames. A positioning cylinder is fixedly connected to the positioning frame, and a positioning block that can abut against the carrier is fixedly connected to the telescopic rod of the positioning cylinder.

[0030] Furthermore, the structure of the first transmission mechanism and the feeding unit can both adopt the structure of the clamp circulating conveying mechanism. The transport length of the feeding unit is less than the transport length of the clamp circulating conveying mechanism. Both the clamp circulating conveying mechanism and the feeding unit are provided with a material blocking component. The material blocking component includes a movable column that is slidably connected to both sides of the bracket and can be activated by a material blocking cylinder. A roller shaft that can block the movement of the carrier is rotatably connected to the movable column.

[0031] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention includes a feeding unit that transports the back cover to a protective film bonding unit for film bonding. The bonded back cover is then transported to the output of a first transmission mechanism. During this process, the upper mold on the clamping circulation conveyor is transported to its output, while the lower mold on the clamping circulation conveyor is transferred to a dispensing unit via a second robotic arm. The dispensing unit places a sealing ring into the lower mold for dispensing. After dispensing, the first robotic arm is activated, placing the back cover and upper mold sequentially into the lower mold. The cooperation between the upper and lower molds ensures the dispensed sealing ring adheres tightly to the back cover. The first robotic arm then transfers the upper and lower molds to a second transmission mechanism, which in turn transfers them to a pressure-holding unit for pressure holding. Finally, the pressure-holding unit uses a third transmission mechanism to move the closed upper and lower molds to a cover removal unit for cover removal, thus completing the automatic bonding of the sealing ring to the back cover. The mobile phone back cover assembly line provided by this invention can automatically complete the bonding of the protective film and sealing ring, improving bonding accuracy, reducing labor, and increasing production efficiency. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the complete structure of the device of the present invention; Figure 2 This is a partially enlarged schematic diagram of the protective film bonding unit; Figure 3 This is an enlarged view of the protective film bonding unit from another angle; Figure 4 A cross-sectional schematic diagram of the protective film bonding unit; Figure 5 This is a schematic diagram of the rolling unit. Figure 6 This is a schematic diagram of the end effector of a film-applying robot.

[0034] Figure 7 This is a schematic diagram of the dispensing unit. Figure 8 This is a magnified schematic diagram of a portion of the dispensing unit; Figure 9 This is a schematic diagram of the pressure holding unit. Figure 10 This is a structural diagram of the cover removal unit; Figure 11 This is a schematic diagram of the input end structure of the clamping and circulating conveying mechanism; Figure 12 This is a cross-sectional schematic diagram showing the clamping and conveying mechanism located below the second robotic arm; Figure 13 This is a schematic diagram of the material stop assembly.

[0035] The components include: 1. Protective film lamination unit; 2. Adhesive dispensing unit; 3. Pressure holding unit; 4. Cover removal unit; 5. Fixture circulation conveying mechanism; 6. First transmission mechanism; 7. Second transmission mechanism; 8. Third transmission mechanism; 9. Unloading unit; 10. First robotic arm; 11. Second robotic arm; 12. Third robotic arm; 13. Fourth robotic arm; 14. Loading unit; 15. Upper mold; 16. Lower mold; 101. Six-station rotary table; 1011. Loading station; 1012. Plasma treatment station; 1013. Transition station; 1014. Film lamination station; 1015. Rolling station; 1016. Unloading station; 102. Rear cover plasma treatment unit; 1021. Plasma treatment base; 1022. Plasma treatment gun; 10 23. Horizontal moving mechanism; 1024. Plasma treatment robot; 103. Material carrying boss; 1031. Film applying robot; 1032. Film output machine; 104. Rolling unit; 105. Discharge robot; 106. Support base; 107. Suction chamber; 108. First suction pipe; 109. Suction hole; 110. Fixed rod; 111. Rotary disk; 112. Through hole; 113. Rotary joint; 114. Second suction pipe; 115. Rotary motor; 116. Limit cylinder; 117. Loading robot; 118. QR code scanning unit; 119. Adjustable mechanism; 120. QR code printing unit; 121. First synchronous pulley; 122. Synchronous belt; 123. Moving shaft; 124. First moving plate; 125. 126. First cylinder; 127. U-shaped plate; 128. T-shaped plate; 129. Second moving plate; 130. Suction plate; 131. Angle motor; 132. First roller shaft; 133. Z-axis moving mechanism; 134. Support frame; 135. Second cylinder; 136. First pneumatic finger; 137. First rolling plate; 138. Third moving plate; 139. Third cylinder; 140. Second pneumatic finger; 141. Second rolling plate; 142. Third roller shaft; 201. First worktable; 202. First moving mechanism; 2021. First slide rail; 2022. Drive column; 2023. Second slide rail; 2024. Moving plate; 2025. Support frame; 2026. First slider; 203. First... Support frame; 2031, sealing ring plasma treatment unit; 2032, dispensing machine; 204, second support frame; 2041, sealing ring initial positioner; 205, third support frame; 2051, dispensing quality detector; 206, lifting mechanism; 2061, fixed plate; 2062, lifting cylinder; 2063, Z-shaped lifting plate; 2064, pneumatic finger; 2065, clamping rod; 2066, third slide rail; 2067, second slider; 207, cover plate circulation conveying mechanism; 208, feeding robot; 301, pressure holding frame; 302, handling robot; 303, pressure holding chamber; 401, second moving mechanism; 4011, second worktable; 4012, fourth slide rail; 4013, moving frame; 4014, top plate;4015. Clamping cylinder; 4016. Clamping plate; 501. Support; 502. First slot; 503. Second slot; 504. First conveyor belt; 505. Carrier; 506. Second conveyor belt; 507. Transfer assembly; 5071. Vertical moving mechanism; 5072. Moving frame; 5073. Third conveyor belt; 5074. Limit block; 508. Lifting cylinder; 509. Lifting plate; 510. Guide column; 511. Positioning frame; 512. Positioning cylinder; 513. Positioning block; 514. Material stop assembly; 5141. Moving column; 5142. Roller. Detailed Implementation

[0036] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0037] Example: Please refer to Figure 1 , Figure 7 , Figure 9 and Figure 10A mobile phone back cover assembly line includes a feeding unit 14, a protective film bonding unit 1, a first transmission mechanism 6, a fixture circulating conveying mechanism 5, a dispensing unit 2, a second transmission mechanism 7, a pressure holding unit 3, a third transmission mechanism 8, and a cover removal unit 4. The output end of the feeding unit 14 is connected to the protective film bonding unit 1. The protective film bonding unit 1 is connected to the dispensing unit 2 via the first transmission mechanism 6. The dispensing unit 2 is connected to the pressure holding unit 3 via the second transmission mechanism 7. The pressure holding unit 3 is connected to the cover removal unit 4 via the third transmission mechanism 8. The cover removal unit 4 is equipped with a unloading unit 9. The end of the dispensing unit 2, the output end of the first transmission mechanism 6, the input end of the second transmission mechanism 7, and the output end of the fixture circulating conveying mechanism 5 are all located below a first robotic arm 10. The input end of the fixture circulation conveying mechanism 5 is located at the cover removal unit 4; the mobile phone back cover assembly line also includes an upper mold 15 and a lower mold 16. The upper mold 15 and the lower mold 16 are recycled through the transfer of the fixture circulation conveying mechanism 5. The sealing ring and the back cover can be placed on the lower mold 16 in sequence. The second robot arm 11 can transfer the lower mold 16 located on the fixture circulation conveying mechanism 5 to the dispensing unit 2. The first robot arm 10 can transfer the back cover located on the first transmission mechanism 6 and the upper mold 15 located on the fixture circulation conveying mechanism 5 to the lower mold 16 located on the dispensing unit 2 in sequence. The first robot arm 10 can also transfer the lower mold 16 and the upper mold 15 located on the dispensing unit 2 after mold closing to the second transmission mechanism 7 at the same time. The pressure holding unit 3 can transfer the upper mold 15 and the lower mold 16 after mold closing to the second transmission mechanism 7. The lower mold 16 is transferred to the third transmission mechanism 8; after the back cover is placed into the loading unit 14, the loading unit 14 transports the back cover to the protective film bonding unit 1 for film bonding. Subsequently, the protective film bonding unit 1 transports the back cover after film bonding to the first transmission mechanism 6. During this process, the lower mold 16 located on the clamping circulation conveying mechanism 5 is transferred to the dispensing unit 2 by the second robot arm 11. In the dispensing unit 2, the sealing ring is placed into the lower mold 16 for dispensing. Subsequently, the dispensing unit 2 transports the lower mold 16 after dispensing to the end of the dispensing unit 2. During the dispensing process, the upper mold 15 located on the clamping circulation conveying mechanism 5 is transported to the output end of the clamping circulation conveying mechanism 5. At the same time, the back cover after film bonding moves to the output end of the first transmission mechanism 6. The robot arm 10 is activated and sequentially picks up the upper mold 15 and the back cover, and then places the back cover and the upper mold 15 into the lower mold 16. Subsequently, the upper mold 15 and the lower mold 16 will close, so that the sealing ring after dispensing is tightly attached to the back cover. Then, the first robot arm 10 transfers the closed upper mold 15 and the lower mold 16 to the second transmission mechanism 7, and then to the pressure holding unit 3 for long-term pressure holding. After pressure holding is completed, the pressure holding unit 3 moves the closed upper mold 15 and the lower mold 16 to the cap removal unit 4 for cap removal through the third transmission mechanism 8. The cap removal unit 4 separates the upper mold 15 and the lower mold 16 and transfers them to the fixture circulation conveying mechanism 5, and then unloads the back cover with the sealing ring attached through the unloading unit 9, thus completing the automatic sealing ring attachment work of the back cover.The mobile phone back cover assembly line provided by this invention can automatically complete the application of protective film and sealing ring, improving the application accuracy. Simultaneously, this assembly line provides continuous and stable film application to the mobile phone back cover, thereby increasing production efficiency and reducing the number of workers required.

[0038] Please refer to Figure 2-4The protective film laminating unit 1 includes a six-station rotary disk 101. Six material-carrying bosses 103, capable of adsorbing the back cover, are evenly distributed circumferentially on the top of the rotary disk 101. The protective film laminating unit 1 includes a loading station 1011, a plasma treatment station 1012, a transition station 1013, a film-applying station 1014, a rolling station 1015, and a discharge station 1016 circumferentially distributed around the six-station rotary disk 101. Any material-carrying boss 103, driven by the six-station rotary disk 101, can sequentially pass through the loading station 1011, plasma treatment station 1012, film-applying station 1014, rolling station 1015, and discharge station 1016. The loading station 1011 includes a connecting station for the material-carrying bosses 1013 and 1014. 3. The feeding robot 117 of the feeding unit 14; the plasma treatment station 1012 includes a rear cover plasma treatment unit 102 and a plasma treatment robot 1024 connecting the loading boss 103 and the rear cover plasma treatment unit 102; the film application station 1014 includes a film application robot 1031 and a film output machine 1032, with the film application robot 1031 connecting the loading boss 103 and the film output machine 1032; the rolling station 1015 includes a rolling unit 104 capable of rolling the rear cover; and the unloading station 1016 includes an unloading robot 105 connecting the loading boss 103 and the first transmission mechanism 6. The movement methods of the feeding robot 117, the unloading robot 105, and the film application robot 1031 can all employ existing technologies. The movement method during the procedure, and their execution ends can be modified accordingly as needed; when the back cover is located at the output end of the loading unit 14, the loading robot 117 transfers the back cover to the loading boss 103 on the loading station 1011, and then the six-station rotary table 101 rotates a certain angle to move the back cover to the plasma processing station 1012. Then the plasma processing robot 1024 transfers the back cover to the back cover plasma processing unit 102 for processing, and then the plasma processing robot 1024 transfers the processed back cover to the plasma processing station 1012. During this process, the loading robot 117 transfers the next back cover to the loading station 1011, and then the six-station rotary table 101 rotates to move the back cover to the loading station 1012. The cover moves to the transition station 1013, waiting for the next cover to undergo plasma treatment. After treatment, the six-station rotary table 101 rotates, moving the cover from the transition station 1013 to the film application station 1014. Then, the film application robot 1031 applies the protective film from the film application machine to the cover. This process replaces the manual film application process and improves the positioning accuracy of the film application through the positioning of sensors (sensors are installed at corresponding positions during the operation of each part to automate the film application device). Then, the six-station rotary table 101 rotates, moving the cover to the rolling station 1015. The rolling unit 104 rolls the cover after the protective film is applied, reducing the problem of air bubbles after the protective film is applied to the cover.Subsequently, the six-station rotary table 101 rotates, moving the rolled back cover to the unloading station 1016. Then, the unloading robot 105 transfers the rolled back cover to the first transmission mechanism 6. The back cover plasma treatment unit 102 includes a plasma treatment seat 1021 for placing the back cover and a plasma treatment gun 1022 that can move around the edge of the plasma seat. The bottom of the plasma treatment gun 1022 is connected to a horizontal moving mechanism 1023. The horizontal moving mechanism 1023 can adopt an existing XY-axis moving mechanism, thereby enabling the plasma treatment gun 1022 to surround the back cover, thus achieving plasma treatment of the back cover and ultimately improving the adhesion of the back cover to the protective film.

[0039] In this embodiment, a suction chamber 107 is provided in the middle of the six-station rotary disk 101. At least five material-carrying bosses 103 are respectively connected to the top of the suction chamber 107 through the first suction pipe 108. The material-carrying bosses 103 are provided with suction holes 109 for adsorbing the back cover. The lower part of the six-station rotary disk 101 is fixedly connected to a rotating disk 111 by a fixing rod 110. The lower part of the rotating disk 111 is rotatably connected to the support base 106. The rotating disk 111 is provided with a through hole 112. The suction chamber 107 passes through the through hole 112, and one end of the suction chamber 107 passing through the through hole 112 is connected to the second suction pipe 108 through a rotary joint 113. 14. The second suction pipe 114, at one end away from the suction chamber 107, is connected to the vacuum generator. When the six-station rotary disk 101 rotates, the rotary disk 111, the suction chamber 107, and the first suction pipe 108 will rotate. When the protective film bonding unit 1 is activated, the vacuum generator will start, and air will flow from the suction hole 109 through the first suction pipe 108, the suction chamber 107, and the second suction pipe 114 in sequence, thereby adsorbing the back cover on each station onto the corresponding material carrier boss 103, thus preventing the back cover from falling off. A rotary motor 115 is also fixedly connected to the top of the support base 106. The rotary motor 115 outputs... A first synchronous pulley 121 is fixedly connected to the output end, and a second synchronous pulley is fixed to the outer circumference of the rotating disk 111. The first synchronous pulley 121 and the second synchronous pulley are connected by a synchronous belt 122. The rotary motor 115 is a servo motor. When the rotary motor 115 starts, the first synchronous pulley 121 rotates, and the second synchronous pulley rotates through the synchronous belt 122, thereby realizing the rotation of the rotating disk 111, and thus realizing the rotation of the six-position rotating disk 101. The protective film bonding unit 1 also includes a limiting cylinder 116 installed on the top of the fixed frame. The output end of the limiting cylinder 116 is fixedly connected to a limiting plate, limiting... The positioning plate can abut against the bottom of the six-station rotary disk 101 located below the film application station 1014 and the rolling station 1015. When the film application robot 1031 performs film application and the rolling unit 104 performs rolling, the limiting cylinder 116 is activated, and the limiting plate moves up and abuts against the bottom of the six-station rotary disk 101 to prevent the six-station rotary disk 101 from tilting when the rolling unit 104 rolls and when the film application robot 1031 applies film, thereby improving the service life of the six-station rotary disk 101. A rubber block is provided between the limiting plate and the six-station rotary disk 101, and the rubber block is fixed to the limiting plate to play a buffering role.

[0040] Please refer to Figure 6In this embodiment, the end effector of the film-applying robot 1031 includes a moving shaft 123 connected to the XYZ moving mechanism, a first moving plate 124 fixedly connected to the bottom of the moving shaft 123, a first cylinder 125 fixedly connected to the bottom of the first moving plate 124, a U-shaped plate 126 fixedly connected to the telescopic rod of the first cylinder 125, a second moving plate 128 fixedly connected to both sides of the U-shaped plate 126 via a T-shaped plate 127, and a film-suction plate 129 installed at the bottom of the second moving plate 128. 127 is rotatably connected to U-shaped plate 126. An angle motor 130, which can drive T-shaped plate 127 to rotate at a certain angle, is fixedly connected to the inner side of U-shaped plate 126. A first roller shaft 131, which can roll the back cover, is also fixedly connected to the bottom of U-shaped plate 126. The XYZ moving mechanism is a common moving mechanism. When the back cover after plasma treatment enters the film application station 1014, the film application robot 1031 is started, and the moving shaft 123 moves the suction plate 129 to the film output machine 1032 for picking. The molding process can utilize the existing film ejector 1032 and mold removal mechanism. Then, the moving shaft 123 moves the film suction plate 129 above the rear cover. Next, the moving shaft 123 moves downwards to attach the protective film to the rear cover. Then, the moving shaft 123 moves upwards a certain distance, and the angle motor 130 starts, rotating the film suction plate 129 by a certain angle, so that the outer circle of the first roller shaft 131 is below the film suction plate 129. Then, the first cylinder 125 starts, pressing the first roller shaft 131 against the protective film. On the film, the XYZ moving mechanism is then activated, causing the first roller 131 to perform initial rolling on the protective film, so that the protective film adheres to the back cover. After the rolling is completed, the moving shaft 123 moves upward, the suction plate 129 is reset, and then the film is applied to the next back cover. The bottom of the first moving plate 124 is fixedly connected to the first sleeve, and the top of the U-shaped plate 126 is fixedly connected to the first guide rod. The first guide rod and the first sleeve are in clearance fit to ensure the stability of the suction plate 129 and the first roller 131 when moving in the vertical direction.

[0041] Please refer to Figure 5In this embodiment, the rolling unit 104 includes a Z-axis moving mechanism 132, a support frame 133 fixedly connected to the moving block of the Z-axis moving mechanism 132, a second cylinder 134 installed at the top of the support frame 133, a first pneumatic finger 135 installed on the telescopic rod of the second cylinder 134, a first rolling plate 136 fixedly connected to the output end of the first pneumatic finger 135, a second roller shaft 137 installed at the lower end of the first rolling plate 136 and capable of rolling the back cover, a third moving plate 138 fixedly connected to the bottom of the support frame 133, a third cylinder 139 installed at the bottom of the third moving plate 138, and a third cylinder 139 installed on the third cylinder. The second pneumatic finger 140 on the telescopic rod 139, the second rolling plate 141 fixed to the output end of the second pneumatic finger 140, and the third roller 142 installed at the lower end of the second rolling plate 141 and capable of rolling the back cover are perpendicular to each other. After the protective film is initially rolled by the first roller 131, the back cover with the protective film will enter the rolling station 1015. At this time, the support frame 133 will move downward under the drive of the Z-axis moving mechanism 132. When the third roller 142 is moved to a position close to the protective film, the third cylinder 139 is started, and the third roller 142... The protective film is pressed onto the back cover. Then, the second pneumatic finger 140 is activated, causing the third roller 142 to roll over the two edges of the back cover after the film is applied, completing the second rolling of the protective film. After the third roller 142 has finished rolling, the third cylinder 139 reverses the airflow to lift the third roller 142. Then, the second pneumatic finger 140 is activated, bringing the two second rollers 137 closer together. Then, the second cylinder 134 is activated, causing the second rollers 137 to press onto the protective film. Then, the second pneumatic finger 140 reverses the airflow, causing the second rollers 137 to roll over the other two edges of the back cover after the film is applied. Thus, the third rolling of the protective film is completed. Therefore, this utility model further improves the quality of the protective film on the back cover and reduces the problem of air bubbles in the protective film after rolling the back cover three times. In addition, a second sleeve is fixed to the inner top of the bracket frame 133, a second guide rod is fixed to the top of the first pneumatic finger 135, the second guide rod is clearance-fitted with the second sleeve, a third sleeve is fixed to the top of the first moving plate 124, and a third guide rod is fixed to the top of the second pneumatic finger 140, the third guide rod is clearance-fitted with the third sleeve, ensuring the stability of the second roller shaft 137 and the third roller shaft 142 when moving in the vertical direction.

[0042] Please refer to Figure 7-8The dispensing unit 2 includes a first worktable 201 and a first moving mechanism 202 for placing the lower mold 16. The first moving mechanism 202 is slidably connected to the top of the first worktable 201. A first support frame 203, a second support frame 204, and a third support frame 205 span the two sides of the first worktable 201. A sealing ring plasma treatment unit 2031 and a dispensing machine 2032 are provided on both sides of the first support frame 203. A sealing ring initial positioning device 2041 is installed on the second support frame 204. A dispensing quality detector 2051 is installed on the third support frame 205. A cover plate circulation conveying mechanism 207 is also fixed to the top of the first worktable 201. The dispensing unit 2 also includes an inlet for sequentially placing the sealing ring and the cover plate on the first moving mechanism 202. The material handling robot 208 transfers the cover plate on the lower mold 16 to the cover plate circulation conveying mechanism 207. After the lower mold 16 on the fixture circulation conveying mechanism 5 is transferred to the first moving mechanism 202 by the second robot 11, the first moving mechanism 202 moves to the material inlet of the first worktable 201. The material handling robot 208 places the sealing ring and the cover plate on the first moving mechanism 202 in sequence. Then, the first moving mechanism 202 moves the lower mold 16 to below the sealing ring plasma treatment unit 2031 and performs plasma treatment on the sealing ring to improve the adhesion of the sealing ring, thereby improving the quality of the sealing ring and the back cover. Then, the first moving mechanism 202 moves the lower mold 16 to below the sealing ring initial positioner 2041. The sealing ring initial positioner 2041 performs a preliminary check on whether the sealing ring is accurately placed. After passing the check, the first moving mechanism 202 moves the lower mold 16 below the dispensing machine 2032. Then, the dispensing machine 2032 applies glue to the sealing ring. After dispensing is completed, the first moving mechanism 202 moves the lower mold 16 below the dispensing quality detector 2051 for dispensing quality inspection. After passing the inspection, the first moving mechanism 202 moves to the first worktable 201 located below the first robot arm 10. The sealing ring plasma treatment unit 2031, the dispensing quality detector 2051, and the sealing ring initial positioner 2041 are all existing technologies. A glue head cleaning device is provided near the dispensing machine 2032 for cleaning the glue dispensed by the dispensing machine 2032. The head is cleaned to ensure the stability of the glue spraying quality of the dispensing machine 2032; the first moving mechanism 202 includes a first slide rail 2021 installed on the first worktable 201, a second slide rail 2023 installed on the drive column 2022, a moving plate 2024 driven by the drive column 2022, and a support frame 2025 for placing the lower mold 16. The support frame 2025 is installed on the top of the moving plate 2024. The moving plate 2024 is connected to the first slide rail 2021 and the second slide rail 2023 respectively through the first slider 2026. A screw driven by a motor can be installed inside the drive column 2022. The screw is threadedly connected to the moving plate 2024 to drive the moving plate 2024 and thus move the lower mold 16.Furthermore, in this embodiment, two first moving mechanisms 202 are provided. A lifting mechanism 206 capable of lifting the lower mold 16 is installed on the first worktable 201 near the dispensing quality detector 2051, thereby improving dispensing efficiency. When one first moving mechanism 202 is located below the second robot arm 11, the other first moving mechanism 202 will be located below the first robot arm 10. When the first moving mechanism 202 located below the second robot arm 11 passes through receiving the lower mold 16, transporting the lower mold 16 to the inlet, transporting the lower mold 16 to below the sealing ring plasma treatment unit 2031, transporting the lower mold 16 to below the sealing ring initial positioner 2041, and transporting the lower mold 16 to the dispensing point, the dispensing mechanism 202 will proceed as follows: After the lower mold 16 is transported from below the glue applicator 2032 to below the glue dispensing quality detector 2051, the lower mold 16 on the first moving mechanism 202 will be lifted by the lifting mechanism 206 and brought close to the glue dispensing quality detector 2051. At this time, the first moving mechanism 202 will move away and move to below the second robot arm 11. Subsequently, the first moving mechanism 202 located below the first robot arm 10 will move to below the lifting mechanism 206 and transport the inspected lower mold 16 to below the first robot arm 10 for the installation of the back cover and the upper mold 15. During this process, the first moving mechanism 202 located below the second robot arm 11 will continue to receive the lower mold 16 and transport the lower mold 16 to the injection port. The process of transporting the lower mold 16 to the area below the plasma treatment unit 2031 for the sealing ring, to the area below the sealing ring initial positioner 2041, to the area below the dispensing machine 2032, and to the area below the dispensing quality detector 2051 improves the dispensing efficiency of the sealing ring. The lifting mechanism 206 includes a lifting cylinder 2062 mounted on the first worktable 201 via a fixed plate 2061, a Z-shaped lifting plate 2063 fixed to the telescopic rod of the lifting cylinder 2062, pneumatic fingers 2064 mounted on the lower plate of the Z-shaped lifting plate 2063, and a clamping rod 2065 fixed to the gripper of the pneumatic fingers 2064 and capable of clamping the lower mold 16. When needed... When the lower mold 16 is to be lifted, the lifting cylinder 2062 is activated, moving the Z-shaped lifting plate 2063 downward, thereby placing the clamping rods 2065 on both sides of the lower mold 16. Then, the gripper cylinder is activated, clamping the lower mold 16 with the clamping rods 2065. Subsequently, the lifting cylinder 2062 reverses airflow, causing the Z-shaped lifting plate 2063 to move upward, thus lifting the lower mold 16. A third slide rail 2066 is also fixed to the upper plate of the Z-shaped lifting plate 2063. The clamping rods 2065 are connected to the second slide rail 2023 via the second slider 2067, reducing the deflection of the clamping rods 2065 and ensuring the horizontal lifting of the lower mold 16 by the clamping rods 2065, thereby improving the detection quality of the dispensing quality detector 2051. The dispensing machine 2032, the sealing ring initial positioner 2041, and the dispensing quality detector 2051 are all connected to their respective support frames via high-precision robotic arms.A high-precision robotic arm, in conjunction with relevant position sensors, improves the encircling accuracy of the dispensing machine 2032, the sealing ring initial positioner 2041, and the dispensing quality detector 2051 during the sealing ring encircling operation. The position sensors are installed at positions corresponding to the dispensing machine 2032, the sealing ring initial positioner 2041, and the dispensing quality detector 2051 when the first moving mechanism 202 carries the sealing ring. The dispensing machine 2032, using an existing model, ensures stable glue flow. The combination of the dispensing machine 2032 and the high-precision robotic arm achieves uniform glue dispensing onto the sealing ring, ensuring a uniform fit between the sealing ring and the back cover, thus improving the fit accuracy between the back cover and the sealing ring. The sealing ring plasma treatment unit 2031 improves the adhesion of the sealing ring to the back cover. The dispensing quality detector 2051 can detect in advance whether the sealing ring is accurately placed in the lower mold 16, and the sealing ring initial positioner 2041 can detect the dispensing status of the sealing ring after dispensing. The combination of the two solves the problem of glue overflow and leakage during dispensing of the sealing ring, further ensuring the dispensing quality of the sealing ring. During the process of the first robot 10 placing the back cover and the upper mold 15 into the sealing ring after dispensing, since the first robot 10 can use an existing high-precision robot, this greatly improves the bonding accuracy between the sealing ring and the back cover. Therefore, the mobile phone back cover assembly line provided by this invention can complete the high-precision bonding of the sealing ring. At the same time, the mobile phone back cover assembly line continuously and stably bonds the mobile phone back cover and the sealing ring, thereby improving production efficiency and reducing the number of workers required.

[0043] Please refer to Figure 9 The pressure holding unit 3 includes a pressure holding frame 301 and a handling robot 302. The pressure holding frame 301 is provided with several pressure holding cavities 303. The handling robot 302 can transfer the upper mold 15 and lower mold 16 after mold closing on the second transmission mechanism 7 to the pressure holding cavity 303. The third transmission mechanism 8 is located above the second transmission mechanism 7. When the upper mold 15 and lower mold 16 after mold closing move to the output end of the second transmission mechanism 7, the handling robot 302 moves the mold closing on the second transmission mechanism 7 to the pressure holding cavity 303 for pressure holding. After the pressure holding time is reached, the mold closing is taken out from the pressure holding cavity 303 and placed on the third transmission mechanism 8 and finally enters the cap removal unit 4 for cap removal.

[0044] Please refer to Figure 10In this embodiment, the cap removal unit 4 includes a second moving mechanism 401, and the unloading unit 9 is located between the second moving mechanism 401 and the clamping circulation conveying mechanism 5. The output ends of the clamping circulation conveying mechanism 5 and the third transmission mechanism 8, and the input end of the second moving mechanism 401 are connected by a third robot arm 12. The input ends of the clamping circulation conveying mechanism 5, the input end of the unloading unit 9, and the output end of the second moving mechanism 401 are connected by a fourth robot arm 13. When the upper mold 15 and lower mold 16 after mold closing are transmitted to the output end of the third transmission mechanism 8, the third robot arm 12 transfers the upper mold 15 and lower mold 16 after mold closing to... The input end of the second moving mechanism 401 is then transferred to the lower part of the fourth robot arm 13, where the fourth robot arm 13 transfers the upper mold 15 to the clamping circulation conveying mechanism 5. The fourth robot arm 13 then transfers the rear cover with the sealing ring to the unloading unit 9 for unloading. Next, the second moving mechanism 401 moves the lower mold 16 to the lower part of the third robot arm 12, where the third robot arm 12 moves the lower mold 16 from the second moving mechanism 401 to the clamping circulation conveying mechanism 5, thus completing the unpacking. Furthermore, this embodiment has three second moving mechanisms 401. When the two molds are closed, the lower mold 16 and the upper mold... When the upper mold 15 is located below the fourth robotic arm 13, the lower mold 16 will be located below the third robotic arm 12. The cross transport of the three second moving mechanisms 401 greatly improves the cap removal efficiency of the cap removal unit 4. Among them, the second moving mechanism 401 includes a fourth slide rail 4012 mounted on the second worktable 4011, a moving frame 4013 slidably connected to the fourth slide rail 4012, and a top plate 4014 for placing the lower mold 16 and the upper mold 15 after mold closing. The top plate 4014 is fixed to the top of the moving frame 4013, and two clamping cylinders 4015 are fixed to the bottom of the top plate 4014. A clamping plate 4016 for holding the lower mold 16 is fixed to the telescopic rod of 015. The moving frame 4013 can be connected to a drive mechanism, such as a rodless cylinder, so that the moving frame 4013 can move back and forth between the lower part of the third robot arm 12 and the lower part of the fourth robot arm 13. During the movement of the moving frame 4013, the clamping cylinder 4015 will be activated to fix the mold or lower mold 16 during transportation to prevent it from slipping. When the moving frame 4013 moves to the lower part of the third robot arm 12 or the fourth robot arm 13, the clamping cylinder 4015 stops clamping, thereby facilitating the transfer of the upper mold 15 and the lower mold 16.

[0045] The mobile phone back cover assembly line also includes a QR code printing unit 120 and multiple QR code scanning units 118 for recording the application of back cover film and sealing rings, ensuring the accurate flow of each back cover and tracking of defective products; the QR code printing unit 120 is located between the protective film application unit 1 and the loading unit 14, one QR code scanning unit 118 is located between the QR code printing unit 120 and the loading unit 14, and one QR code scanning unit 118 is mounted on the unloading unit 9; in addition, the protective film application unit 1... The dispensing unit 2 is also equipped with a QR code scanning unit 118. A traceability code for recording the model and product identity is sprayed onto the front and rear covers before they enter the device. When the loading robot 117 transfers the rear cover from the loading unit 14 to the loading station 1011, the loading robot 117 first transfers the rear cover to the QR code scanning unit 118 for scanning, recording that the cover will enter the device, and extracting relevant information from the traceability code, such as the product model number and production date. Then, the loading robot 117... After the back cover is scanned and recorded, it is transferred to the QR code spraying unit 120, where a QR code is sprayed onto the back cover. During this process, the QR code spraying unit 120 records the relevant information extracted from the traceability code onto the QR code. During the assembly process, the QR code after spraying is scanned and recorded by the QR code scanning units 118 at the protective film bonding unit 1, the glue dispensing unit 2, and the unloading unit 9. This records relevant information about the back cover during the processing of the device, such as the glue dispensing route and the holding pressure duration. In addition, in this embodiment, both the QR code scanning unit 118 and the QR code spraying unit 120 are fixed on the adjustable mechanism 119 to adapt to the scanning and spraying of QR codes at different heights and positions. The adjustable mechanism can be implemented by using multiple rods clamped by clamps. When it is necessary to adjust the height of the QR code spraying unit 120, simply loosen the clamps on the rods and adjust the length of the rods extending out of the clamps, thereby adjusting the QR code spraying unit 120.

[0046] Please refer to Figure 11-13In this embodiment, the clamping circulating conveying mechanism 5 includes a bracket 501. A first slot 502 is provided at the top of the bracket 501, and a second slot 503 is provided on the bracket 501 below the first slot 502. First conveyor belts 504 are provided on both sides of the first slot 502, and carriers 505 are placed on the first conveyor belts 504. An upper mold 15 and a lower mold 16 can be placed on top of the carriers 505. A second conveyor belt 506 is provided at the lower part of the bracket 501 to transport the carriers 505. The two ends of the bracket 501 are respectively provided to allow the carriers 505 on the first conveyor belt 504 and the second conveyor belt 506 to move between each other. The transfer component 507 is used for transfer. When the upper mold 15 and lower mold 16, after mold closing, move to below the fourth robot arm 13, the fourth robot arm 13 transfers the upper mold 15 to one side of the carrier 505. Then, the fourth robot arm 13 moves the back cover with the sealing ring attached to the QR code scanning unit 118 for scanning. After scanning, the fourth robot arm 13 transfers the back cover to the unloading unit 9 for unloading. Subsequently, the moving frame 4013 moves to below the third robot arm 12, while the carrier 505, on which the upper mold 15 was just placed, moves under the action of the first conveyor belt 504 and moves to the side of the third robot arm 12. Below, the third robotic arm 12 then transfers the lower mold 16 from the moving frame 4013 to the side of the carrier 505 adjacent to the upper mold 15, thus completing the removal of the upper mold 15 and lower mold 16 after mold closing. The carrier 505 containing the upper mold 15 and lower mold 16 will then move to the underside of the second robotic arm 11, where the second robotic arm 11 removes the lower mold 16. Subsequently, the carrier 505 containing the upper mold 15 will move to the underside of the first robotic arm 10, where the first robotic arm 10 removes the upper mold 15. The empty carrier 505 will then be transferred to the second conveyor belt 506 via the transfer assembly 507, and transported through the second conveyor belt... The conveyor belt 506 moves to a position below the fourth robotic arm 13, and from there the transfer assembly 507 transfers the carrier 505 from the second conveyor belt 506 to the first conveyor belt 504, thus completing the cycle of the carrier 505. The transfer assembly 507 includes a vertical moving mechanism 5071, a moving frame 5072 connected to the vertical moving mechanism 5071, and a third conveyor belt 5073 mounted on the moving frame 5072 and alignable with either the first conveyor belt 504 or the second conveyor belt 506. The vertical moving mechanism 5071 can be implemented using a simple combination of a screw and nut mechanism and a slider and slide rail mechanism.When the carrier 505 needs to be transferred, the vertical moving mechanism 5071 is activated, aligning the third conveyor belt 5073 with the first conveyor belt 504, and ensuring that the rotation direction of the third conveyor belt 5073 is the same as that of the first conveyor belt 504. Then, under the action of the first conveyor belt 504, the carrier 505 is transferred to the third conveyor belt 5073. Subsequently, the vertical moving mechanism 5071 is activated again, aligning the third conveyor belt 5073 with the first conveyor belt 504, and ensuring that the rotation direction of the third conveyor belt 5073 is the same as that of the second conveyor belt 506. At this point, the carrier 505 moves from the third conveyor belt 5073 to the second conveyor belt 506, thus completing the transfer of the carrier 505 between the first conveyor belt 504 and the second conveyor belt 506. A limiting block 5074 is fixed to the top of the moving frame 5072 to limit the movement of the carrier 505 and prevent it from slipping out of the moving frame 5072. Furthermore, the second slot 5 located below the first robotic arm 10 and the second robotic arm 11... The support 503 is also equipped with a lifting cylinder 508 for lifting the carrier 505. A lifting plate 509, which can abut against the carrier 505, is fixed to the telescopic rod of the lifting cylinder 508, ensuring that the first robotic arm 10 and the second robotic arm 11 do not interfere with the support 501 when transferring the upper mold 15 and the lower mold 16. A guide post 510 is provided at the bottom of the lifting plate 509, and a guide hole is provided on the second slot 503. The guide post 510 is clearance-fitted with the guide hole and passes through the guide hole, ensuring… This ensures the stability of the lifting plate 509 during upward movement and prevents the carrier 505 from deflecting. Two positioning frames 511 are installed on the top of the bracket 501 near the lifting cylinder 508. The carrier 505 can be positioned between the two positioning frames 511. A positioning cylinder 512 is fixedly connected to each positioning frame 511. A positioning block 513, which abuts against the carrier 505, is fixedly connected to the telescopic rod of the positioning cylinder 512 for adjusting the position of the carrier 505, thus ensuring the clamping accuracy of the first robotic arm 10 and the second robotic arm 11.

[0047] In this embodiment, the structures of the first transmission mechanism 6 and the feeding unit 14 can both adopt the structure of the clamping circulating conveyor mechanism 5 to reduce the complexity of the device. The transport length of the feeding unit 14 is less than the transport length of the clamping circulating conveyor mechanism 5. Both the clamping circulating conveyor mechanism 5 and the feeding unit 14 are provided with a material blocking component 514. The material blocking component 514 includes a movable column 5141 that is slidably connected to both sides of the bracket 501 and can be activated by the material blocking cylinder. A roller shaft 5142 that can block the movement of the carrier 505 is rotatably connected to the movable column 5141, so that the carrier 505 can stop at a specific position, thereby ensuring the transfer accuracy of the upper mold 15 and the lower mold 16 in the carrier 505. The second transmission mechanism 7 and the third transmission mechanism 8 can both adopt the structure of the first transmission belt 504.

[0048] Working principle After the back cover moves to the output end of the loading unit 14, the loading robot 117 first transfers the back cover from the loading unit 14 to the QR code scanning unit 118 for QR code scanning, and then transfers the back cover to the QR code spraying unit 120 for coding. Subsequently, the loading robot 117 transfers the back cover to the loading station 1011, and then the rotary motor 115 starts, the first synchronous pulley 121 rotates, and the second synchronous pulley rotates through the synchronous belt 122, thereby realizing the rotation of the rotating disk 111, so that the six-station rotating disk 101 rotates at a certain angle, thereby moving the back cover to the plasma processing station 1012. Subsequently, the plasma processing robot 1024 transfers the back cover to the plasma processing seat 1021, and then the plasma processing gun 1022, driven by the XY axis moving mechanism, circles the back cover to realize the plasma processing of the back cover. Finally, the plasma processing robot 1024 transfers the processed back cover to the plasma processing station 1012. During this process, the loading robot 117 transfers the next back cover to the loading station 1011. Then, the six-station rotary table 101 rotates, moving the back cover to the transition station 1013, awaiting plasma treatment. After treatment, the six-station rotary table 101 rotates again, moving the back cover from the transition station 1013 to the film-applying station 1014. Then, the limit cylinder 116 activates, pressing a rubber block against the bottom of the six-station rotary table 101. Next, the film-applying robot 1031 applies the protective film from the film applicator to the back cover. After the protective film is applied, the limit cylinder... 116 resets, the six-station rotary table 101 rotates, moving the back cover to the rolling station 1015. Then, the limit cylinder 116 is activated, pressing the rubber block against the bottom of the six-station rotary table 101. The rolling unit 104 then rolls the back cover after the protective film is applied. After rolling, the limit cylinder 116 resets, the six-station rotary table 101 rotates, and the rolled back cover moves to the discharge station 1016. Then, the discharge robot 105 transfers the rolled back cover to the first transmission mechanism 6. The process stops when the back cover with the film is below the first robot 10.In the above process, the lower mold 16 located on the clamping circulation conveying mechanism 5 is transferred to the top of the support frame 2025 by the second robot arm 11. Then, the moving plate 2024 moves, moving the support frame 2025 to the inlet of the first worktable 201. The feeding robot arm 208 places the sealing ring and the cover plate on the lower mold 16 in sequence. Then, the moving plate 2024 moves the lower mold 16 to below the sealing ring plasma treatment unit 2031 and performs plasma treatment on the sealing ring to improve its adhesion. Then, the moving plate 2024 moves the lower mold 16 to below the sealing ring initial positioner 2041 for preliminary inspection of the sealing ring. After passing the inspection, the moving plate 2024 moves the lower mold 16 to below the dispensing machine 2032 to dispense glue onto the sealing ring. After dispensing, the moving plate 2024 moves the lower mold 16 to below the dispensing quality detector 2051. Then, the lifting cylinder 2062 is activated, moving the Z-shaped lifting plate 2063 downward, thereby lifting the clamping rod 2. 065 is placed on both sides of the lower mold 16. Then, the gripper cylinder is activated, and the gripper rod 2065 clamps the lower mold 16. Then, the lifting cylinder 2062 is vented in reverse, causing the Z-shaped lifting plate 2063 to move upward, thereby lifting the lower mold 16. Then, the glue dispensing quality detector 2051 performs glue dispensing detection on the sealing ring after glue dispensing. At the same time, the first moving mechanism 202 below the glue dispensing quality detector 2051 will move to the lower side of the second robot 11, and the first moving mechanism 202 located below the first robot 10 will move to the lower side of the glue dispensing quality detector 2051. When the glue dispensing quality detector 2051 completes the detection, the lifting cylinder 2062 is activated, and the Z-shaped lifting plate 2063 is moved downward, placing the detected lower mold 16 on the first moving mechanism 202. Then, the gripper cylinder is vented in reverse, and the gripper rod 2065 will release the clamping of the lower mold 16. Then, the first moving mechanism 202 will move to the lower side of the first robot 10.During this process, the carrier 505, which only contains the upper mold 15, moves to below the first robot arm 10 under the action of the first conveyor belt 504. Then, the transfer robot arm transfers the cover plate on the lower mold 16 to the cover plate circulation conveying mechanism 207. At the same time, the first robot arm 10 is activated, sequentially picking up the upper mold 15 from the first conveyor belt 504 and the rear cover from the first transfer mechanism 6, and placing the rear cover and the upper mold 15 into the lower mold 16. Then, the upper mold 15 and the lower mold 16 are closed. After the mold is closed, the first robot arm 10... After the molds are closed, the upper mold 15 and lower mold 16 are transferred to the second transfer mechanism 7. Then, the handling robot 302 moves the molds closed on the second transfer mechanism 7 to the pressure holding chamber 303 for pressure holding. After the pressure holding time is reached, the molds closed are removed from the pressure holding chamber 303 and placed on the third transfer mechanism 8. Then, the third robot 12 transfers the closed upper mold 15 and lower mold 16 on the third transfer mechanism 8 to the moving frame 4013. Then, the clamping cylinder 4015 is activated to clamp the molds closed. Then, the moving frame... The frame 4013 moves to below the fourth robot arm 13, then the clamping cylinder 4015 stops clamping the mold, and the fourth robot arm 13 transfers the upper mold 15 to the carrier 505 located on the first conveyor belt 504. The fourth robot arm 13 then transfers the back cover with the sealing ring to the QR code scanning unit 118 for scanning. After scanning, the back cover is transferred to the unloading unit 9 for unloading. Then, the clamping cylinder 4015 is activated to clamp the lower mold 16, and then the moving frame 4013 moves to the... Below the three robotic arms 12, the clamping cylinder 4015 stops clamping the lower mold 16, and the third robotic arm 12 moves the lower mold 16 to the fixture circulation conveying mechanism 5, thereby completing the separation of the upper mold 15 and the lower mold 16 after mold closing. The mobile phone back cover assembly line provided by the present invention can automatically complete the application of protective film and sealing ring, improving the application accuracy. At the same time, the mobile phone back cover assembly line continuously and stably applies film to the mobile phone back cover, thereby improving production efficiency and reducing the number of workers required.

[0049] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "upper," "lower," "left," "right," "front," "back," and similar expressions used in this document are for illustrative purposes only.

Claims

1. A mobile phone back cover assembly line, characterized in that: The system includes a feeding unit (14), a protective film bonding unit (1), a first transmission mechanism (6), a fixture circulation conveying mechanism (5), a dispensing unit (2) for dispensing sealant rings, a second transmission mechanism (7), a pressure holding unit (3), a third transmission mechanism (8), and a cap removal unit (4). The output end of the feeding unit (14) is connected to the protective film bonding unit (1). The protective film bonding unit (1) is connected to the dispensing unit (2) via the first transmission mechanism (6). 2) The pressure holding unit (3) is connected to the pressure holding unit (3) via the second transmission mechanism (7). The pressure holding unit (3) is connected to the cap removal unit (4) via the third transmission mechanism (8). The cap removal unit (4) is equipped with a feeding unit (9). The end of the dispensing unit (2), the output end of the first transmission mechanism (6), the input end of the second transmission mechanism (7), and the output end of the clamping circulation conveying mechanism (5) are all located below the first robot (10). The input of the clamping circulation conveying mechanism (5) is... The end is located at the disassembly unit (4); the mobile phone back cover assembly line also includes an upper mold (15) and a lower mold (16). The upper mold (15) and the lower mold (16) are recycled through the transfer of the fixture circulation conveying mechanism (5). The sealing ring and the back cover can be placed on the lower mold (16) in sequence. The second robot (11) can transfer the lower mold (16) located on the fixture circulation conveying mechanism (5) to the dispensing unit (2). The first robot (10) can sequentially transfer the lower mold (16) located on the first conveying machine to the dispensing unit (2). The rear cover on the structure (6) and the upper mold (15) on the clamping circulation conveying mechanism (5) are transferred to the lower mold (16) on the dispensing unit (2), and the first robot (10) can simultaneously transfer the lower mold (16) and the upper mold (15) on the dispensing unit (2) after mold closing to the second transmission mechanism (7), and the pressure holding unit (3) can transfer the upper mold (15) and the lower mold (16) after mold closing to the third transmission mechanism (8); After the back cover is placed into the loading unit (14), the loading unit (14) transports the back cover to the protective film bonding unit (1) for film bonding. Then, the protective film bonding unit (1) transports the back cover after film bonding to the first transmission mechanism (6). During this process, the lower mold (16) located on the fixture circulation conveying mechanism (5) will be transferred to the dispensing unit (2) by the second robot (11). In the dispensing unit (2), the sealing ring will be placed into the lower mold (16) for dispensing. Then, the dispensing unit (2) transports the lower mold (16) after dispensing to the end of the dispensing unit (2). During the dispensing process, the upper mold (15) located on the fixture circulation conveying mechanism (5) will be transported to the output end of the fixture circulation conveying mechanism (5). At the same time, the back cover after film bonding will move to the output end of the first transmission mechanism (6). Then, the first robot (10) is started, and the back cover will be transferred to the first transmission mechanism (6) according to the film bonding unit (11). The upper mold (15) and the back cover are picked up one by one, and the back cover and the upper mold (15) are placed into the lower mold (16) in sequence. Then the upper mold (15) and the lower mold (16) will close the mold, so that the sealing ring after dispensing is tightly attached to the back cover. Then the first robot (10) transfers the closed upper mold (15) and the lower mold (16) to the second transmission mechanism (7), and transfers them to the pressure holding unit (3) for long-term pressure holding through the second transmission mechanism (7). After the pressure holding is completed, the pressure holding unit (3) moves the closed upper mold (15) and the lower mold (16) to the cap removal unit (4) through the third transmission mechanism (8) to remove the cap. The cap removal unit (4) separates the upper mold (15) and the lower mold (16) and transfers them to the fixture circulation conveying mechanism (5), and the back cover with the sealing ring attached is unloaded through the unloading unit (9), thus completing the automatic sealing ring application work of the back cover.

2. The mobile phone back cover assembly line according to claim 1, characterized in that: The protective film bonding unit (1) includes a six-station rotary disk (101). At least five material-carrying protrusions (103) for adsorbing the back cover are evenly distributed circumferentially on the top of the six-station rotary disk (101). The protective film bonding unit (1) includes a loading station (1011), a plasma treatment station (1012), a film-applying station (1014), a rolling station (1015), and a discharge station (1016) circumferentially distributed above and around the six-station rotary disk (101). Any one of the material-carrying protrusions (103) can sequentially pass through the loading station (1011), the plasma treatment station (1012), the film-applying station (1014), the rolling station (1015), and the discharge station (1016) under the drive of the six-station rotary disk (101). The loading station... (1011) includes a loading robot (117) connecting the loading boss (103) and the loading unit (14), the plasma treatment station (1012) includes a back cover plasma treatment unit (102) and a plasma treatment robot (1024) connecting the loading boss (103) and the back cover plasma treatment unit (102), the film application station (1014) includes a film application robot (1031) and a film output machine (1032), the film application robot (1031) connects the loading boss (103) and the film output machine (1032), the rolling station (1015) includes a rolling unit (104) capable of rolling the back cover, and the discharge station (1016) includes a discharge robot (105) connecting the loading boss (103) and the first transmission mechanism (6).

3. The mobile phone back cover assembly line according to claim 2, characterized in that: The six-station rotary disk (101) has a suction chamber (107) in the middle. At least five material-carrying bosses (103) are connected to the top of the suction chamber (107) through first suction pipes (108). The material-carrying bosses (103) are provided with suction holes (109) for adsorbing the rear cover. The lower part of the six-station rotary disk (101) is fixed to a rotating disk (111) by a fixing rod (110). The lower part of the rotating disk (111) is rotatably connected to the support base (106). The rotating disk (111) is provided with a through hole (112). The suction chamber (107) passes through the through hole (112), and one end of the suction chamber (107) passing through the through hole (112) is connected to the second suction pipe (114) through a rotary joint (113). The end of the second suction pipe (114) away from the suction chamber (107) is connected to the vacuum generator.

4. The mobile phone back cover assembly line according to claim 1, characterized in that: The dispensing unit (2) includes a first worktable (201) and a first moving mechanism (202) for placing the lower mold (16). The first moving mechanism (202) is slidably connected to the top of the first worktable (201). A first support frame (203), a second support frame (204), and a third support frame (205) span the two sides of the first worktable (201). A sealing ring plasma treatment unit (2031) and a dispensing machine (2032) are provided on both sides of the first support frame (203). A sealing ring initial positioning device (2041) is installed on the second support frame (204). The third support frame (205)... 05) is equipped with a dispensing quality detector (2051). The dispensing machine (2032), the sealing ring initial positioner (2041) and the dispensing quality detector (2051) are all connected to their respective support frames by a high-precision robot. The top of the first worktable (201) is also fixed with a cover plate circulation conveying mechanism (207). The dispensing unit (2) also includes a feeding robot (208) for placing the sealing ring and the cover plate sequentially on the first moving mechanism (202). The cover plate located on the lower mold (16) can be transferred to the cover plate circulation conveying mechanism (207) by the transfer robot.

5. The mobile phone back cover assembly line according to claim 4, characterized in that: The first moving mechanism (202) includes a first slide rail (2021) mounted on the first worktable (201), a second slide rail (2023) mounted on the drive column (2022), a moving plate (2024) that can be driven by the drive column (2022), and a support frame (2025) for placing the lower mold (16). The support frame (2025) is mounted on the top of the moving plate (2024), and the moving plate (2024) is connected to the first slide rail (2021) and the second slide rail (2023) respectively through a first slider (2026).

6. The mobile phone back cover assembly line according to claim 4, characterized in that: Two first moving mechanisms (202) are provided. A lifting mechanism (206) capable of lifting the lower mold (16) is installed on the first worktable (201) near the dispensing quality detector (2051). The lifting mechanism (206) includes a lifting cylinder (2062) installed on the first worktable (201) via a fixing plate (2061), a Z-shaped lifting plate (2063) fixed to the telescopic rod of the lifting cylinder (2062), a pneumatic finger (2064) installed on the lower plate of the Z-shaped lifting plate (2063), and a clamping rod (2065) fixed to the gripper of the pneumatic finger (2064) and capable of clamping the lower mold (16).

7. The mobile phone back cover assembly line according to claim 1, characterized in that: The unloading unit (4) includes a second moving mechanism (401). The unloading unit (9) is located between the second moving mechanism (401) and the clamping circulation conveying mechanism (5). The output end of the clamping circulation conveying mechanism (5), the third transmission mechanism (8), and the input end of the second moving mechanism (401) are all located below the third robot (12). The input end of the clamping circulation conveying mechanism (5), the input end of the unloading unit (9), and the output end of the second moving mechanism (401) are all located below the fourth robot (13).

8. The mobile phone back cover assembly line according to claim 7, characterized in that: The second moving mechanism (401) includes a fourth slide rail (4012) mounted on the second workbench (4011), a moving frame (4013) slidably connected to the fourth slide rail (4012), and a top plate (4014) for placing the lower mold (16) and the upper mold (15) after mold closing. The top plate (4014) is fixed to the top of the moving frame (4013), and two cylinders are fixed to the bottom of the top plate (4014). A clamping plate (4016) for clamping the lower mold (16) is fixed to the telescopic rod of the cylinder.

9. The mobile phone back cover assembly line according to claim 1, characterized in that: The pressure holding unit (3) includes a pressure holding frame (301) and a handling robot (302). The pressure holding frame (301) is provided with a plurality of pressure holding cavities (303). The handling robot (302) can transfer the upper mold (15) and the lower mold (16) after mold closing on the second transmission mechanism (7) to the pressure holding cavity (303).

10. The mobile phone back cover assembly line according to claim 1, characterized in that: It also includes a QR code spraying unit (120) and multiple QR code scanning units (118). The QR code spraying unit (120) is located between the protective film bonding unit (1) and the feeding unit (14). One QR code scanning unit (118) is located between the QR code spraying unit (120) and the feeding unit (14). One QR code scanning unit (118) is installed on the unloading unit (9).

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